try to communicate between Two STM32 F407 discovery board in I2C Protocol but slave not work properly it gives no output

[PANAN.1]

master side :

uint8_t TMP102_ADDR = 0x08;

uint8_t REG_TEMP = 0x01;

int result = 0x01;

(result is numerical data which i want to transfer to another stm 32 )

 HAL_I2C_Master_Transmit(&hi2c3,(TMP102_ADDR<<1),&result,sizeof(result),100);

slave side stm 32 program

uint8_t TMP102_ADDR = 0x08; // Use 8-bit address

uint8_t REG_TEMP = 0x00;

char buf[4];

AL_I2C_Mem_Read(&hi2c1,(TMP102_ADDR<<1),0x0C,I2C_MEMADD_SIZE_8BIT,buf, I2C_MEMADD_SIZE_8BIT,100);

still it shows error or no output on slave side both supplied by USB and ground at common point

[TDK]

The slave should call HAL_I2C_Slave_Receive to receive the information from the master.

There are examples for this. Here is one:

https://github.com/STMicroelectronics/STM32CubeF4/blob/2f3b26f16559f7af495727a98253067a31182cfc/Projects/STM32F412ZG-Nucleo/Examples/I2C/I2C_TwoBoards_ComPolling/readme.txt

[PANAN.1]

HAL_I2C_Slave_Receive(&hi2c1,(uint8_t *)aRxBuffer,sizeof(aRxBuffer), 1000);

i use this instruction also but not works....

[TDK]

It won't even compile as you don't have a slave address. Were you able to follow the example?

[PANAN.1]

i see the example but still it not work for my case

i have same stm32 f407 discovery board as tx and rx side and adress is 0x08

[PANAN.1]

yes thank you now its work

but it dnt send updated value of ADC from transmit side

receiving side get value only once

it not update time by time